sd-bus: fix possible division by 0

Fixes #17541.
2024-10-15 12:34:37 +00:00 · 2020-11-09 14:33:16 +09:00 · 2020-11-09 14:33:16 +09:00 · 291bb0b01c
parent 755b35b1aa
commit 291bb0b01c
1 changed files with 2 additions and 0 deletions
--- a/src/libsystemd/sd-bus/bus-message.c
+++ b/src/libsystemd/sd-bus/bus-message.c
@ -3189,6 +3189,8 @@ static int container_next_item(sd_bus_message *m, struct bus_container *c, size_
                int sz;

                sz = bus_gvariant_get_size(c->signature);
+                if (sz == 0)
+                        return -EBADMSG;
                if (sz < 0) {
                        int alignment;